This is a really cool concept and I can see the potential for a great RTS game somewhere beneath this but at the moment, I feel like there is a lot missing to make this actually enjoyable. My opinions on this game are overall mixed.

First of all, all of the crab units move horrendously slow. This could be remedied with a fast forward button, which most RTS games (or at least games where units have to take time to move to a position) have and it's there for a reason.

Second of all, the coconut crabs not only have really bad aim that renders them almost useless for attacking anything (even buildings that I assume were their main use anyway), but they also frequently got stuck on the terrain for seemingly no reason and often made moving them around tediously annoying.

One thing that could also be improved is at least stating somewhere how many units are produced per minute etc. since the production of them is automated.
At least in Age of Empires, if you need to make a new unit, the game doesn't produce any of its own accord, but rather waits for your command to produce x amount of a certain unit.
It's just helpful to know if you'll have enough units to plan out an attack or not.

That being said, even though I have problems with this game, I don't wanna be too critical since this is a free game and probably a student project. I do appreciate the overall idea of it and the crab theme is very cute and clever. I also love all the art for all the crabs, as well as the little hats they have in the game.

I would be really interested in a fully finished version of this game, cause like I said, I see huge potential here.